/* ============================================================
   QGSM — Glassmorphism Login (design v1)
   Полигон: /design/ · Логика формы сохранена из продакшена
   ============================================================ */

:root {
    --accent: #ff6b2f;
    --accent-soft: rgba(255, 107, 47, 0.16);
    --accent-strong: #ff7a45;

    --glass-bg: rgba(255, 255, 255, 0.012);
    --glass-border: rgba(255, 255, 255, 0.12);
    --glass-border-strong: rgba(255, 255, 255, 0.22);
    --glass-inset: inset 0 1px 0 rgba(255, 255, 255, 0.08);

    --field-bg: rgba(255, 255, 255, 0.06);
    --field-border: rgba(255, 255, 255, 0.12);
    --field-focus-border: rgba(255, 122, 69, 0.75);
    --field-focus-ring: rgba(255, 107, 47, 0.16);

    --text: #f5f7fa;
    --text-dim: rgba(235, 240, 248, 0.62);
    --text-faint: rgba(235, 240, 248, 0.45);

    --err: #ff8a8a;
    --err-bg: rgba(255, 92, 92, 0.12);
    --err-border: rgba(255, 92, 92, 0.35);

    --btn-bg: rgba(255, 255, 255, 0.92);
    --btn-text: #12151b;
    --btn-hover: #ffffff;

    --radius-panel: clamp(20px, 4vw, 28px);
    --radius-field: 14px;
    --radius-btn: 14px;

    --font: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html,
body {
    height: 100%;
    font-family: var(--font);
    color: var(--text);
    font-size: 15px;
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
    overflow-x: hidden;
}

/* ============================================================
   Page
   ============================================================ */

.glass-page {
    position: relative;
    min-height: 100vh;
    min-height: 100dvh;
    display: flex;
    justify-content: center;
    padding:
        calc(20px + env(safe-area-inset-top))
        max(16px, env(safe-area-inset-right))
        calc(20px + env(safe-area-inset-bottom))
        max(16px, env(safe-area-inset-left));
    isolation: isolate;
}

/* ============================================================
   Background
   ============================================================ */

.glass-background {
    position: fixed;
    inset: 0;
    z-index: -1;
    overflow: hidden;
    background:
        linear-gradient(180deg, rgba(8, 11, 17, 0.60) 0%, rgba(9, 12, 19, 0.32) 45%, rgba(8, 11, 17, 0.72) 100%),
        url('/public/assets/QGSM.jpg') center / cover no-repeat,
        #0a0d14;
}

.blob {
    position: absolute;
    border-radius: 50%;
}

.blob-a {
    width: 460px;
    height: 460px;
    top: -110px;
    right: -80px;
    background: radial-gradient(circle, rgba(21, 128, 61, 0.26) 0%, rgba(21, 128, 61, 0) 68%);
    animation: blob-a 22s ease-in-out infinite alternate;
}

.blob-b {
    width: 520px;
    height: 520px;
    bottom: -160px;
    left: -140px;
    background: radial-gradient(circle, rgba(234, 88, 12, 0.26) 0%, rgba(234, 88, 12, 0) 68%);
    animation: blob-b 26s ease-in-out infinite alternate;
}

.blob-c {
    width: 360px;
    height: 360px;
    top: 42%;
    left: 16%;
    background: radial-gradient(circle, rgba(4, 120, 87, 0.14) 0%, rgba(4, 120, 87, 0) 68%);
    animation: blob-c 30s ease-in-out infinite alternate;
}

.blob-d {
    width: 240px;
    height: 240px;
    top: 16%;
    left: 58%;
    background: radial-gradient(circle, rgba(234, 88, 12, 0.12) 0%, rgba(234, 88, 12, 0) 68%);
    animation: blob-d 24s ease-in-out infinite alternate;
}

.glass-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.03), rgba(0, 0, 0, 0.22));
}

/* ============================================================
   Fireflies (ночные светлячки)
   ============================================================ */

.fireflies {
    position: fixed;
    inset: 0;
    z-index: 0;
    pointer-events: none;
    overflow: hidden;
}

.firefly {
    position: absolute;
    border-radius: 50%;
    background: #ffe58a;
    box-shadow:
        0 0 4px #ffe58a,
        0 0 10px rgba(255, 216, 107, 0.7),
        0 0 18px rgba(255, 216, 107, 0.25);
    animation-name: firefly-move, firefly-glow;
    animation-timing-function: ease-in-out, ease-in-out;
    animation-iteration-count: infinite, infinite;
    animation-direction: alternate, alternate;
    transform: translate3d(0, 0, 0);
}

@keyframes firefly-move {
    0%   { transform: translate3d(0, 0, 0); }
    33%  { transform: translate3d(var(--dx1), var(--dy1), 0); }
    66%  { transform: translate3d(var(--dx2), var(--dy2), 0); }
    100% { transform: translate3d(0, 0, 0); }
}

@keyframes firefly-glow {
    0%   { opacity: 0.15; }
    50%  { opacity: 1; }
    100% { opacity: 0.25; }
}

@keyframes blob-a {
    from { transform: translate3d(0, 0, 0) scale(1); }
    to { transform: translate3d(-40px, 50px, 0) scale(1.12); }
}
@keyframes blob-b {
    from { transform: translate3d(0, 0, 0) scale(1); }
    to { transform: translate3d(50px, -40px, 0) scale(1.1); }
}
@keyframes blob-c {
    from { transform: translate3d(0, 0, 0) scale(1); }
    to { transform: translate3d(-30px, -30px, 0) scale(1.16); }
}
@keyframes blob-d {
    from { transform: translate3d(0, 0, 0) scale(1); }
    to { transform: translate3d(36px, 28px, 0) scale(1.14); }
}

/* ============================================================
   Glass panel
   ============================================================ */

.glass-panel {
    width: min(100% - 32px, 440px);
    margin: auto;
    position: relative;
    z-index: 1;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-panel);
    box-shadow:
        0 24px 70px rgba(0, 0, 0, 0.45),
        var(--glass-inset);
    backdrop-filter: blur(8px) saturate(135%);
    -webkit-backdrop-filter: blur(8px) saturate(135%);
    padding: clamp(26px, 5vw, 40px);
    animation: panel-in 0.5s cubic-bezier(0.22, 1, 0.36, 1) both;
}

@keyframes panel-in {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ============================================================
   Back link
   ============================================================ */

.glass-back {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--text-dim);
    font-size: 13px;
    font-weight: 500;
    text-decoration: none;
    margin-bottom: 22px;
    padding: 6px 8px 6px 2px;
    border-radius: 8px;
    transition: color 0.2s ease;
}

.glass-back i {
    font-size: 18px;
}

.glass-back:hover {
    color: var(--text);
}

.glass-back:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

/* ============================================================
   Header
   ============================================================ */

.glass-header {
    text-align: center;
    margin-bottom: 26px;
}

.glass-badge {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    padding: 7px 14px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.07);
    border: 1px solid var(--glass-border);
    color: var(--accent-strong);
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    margin-bottom: 18px;
}

.glass-badge i {
    font-size: 16px;
}

.glass-title {
    font-size: clamp(1.5rem, 4vw, 1.9rem);
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--text);
}

.glass-subtitle {
    margin-top: 8px;
    color: var(--text-dim);
    font-size: 14px;
    font-weight: 400;
}

/* ============================================================
   Form / fields
   ============================================================ */

.glass-form {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.field-label {
    display: block;
    margin-bottom: 8px;
    font-size: 13px;
    font-weight: 500;
    color: var(--text-dim);
    letter-spacing: 0.01em;
}

.field-help {
    margin-top: 7px;
    font-size: 12px;
    line-height: 1.4;
    color: var(--text-faint);
}

.input-wrap {
    position: relative;
}

.input-icon {
    position: absolute;
    left: 16px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 19px;
    color: var(--text-faint);
    pointer-events: none;
    transition: color 0.2s ease;
}

.glass-input {
    width: 100%;
    height: 50px;
    padding: 0 16px 0 46px;
    background: var(--field-bg);
    border: 1px solid var(--field-border);
    border-radius: var(--radius-field);
    color: var(--text);
    font-size: 15px;
    font-family: inherit;
    transition:
        background 0.2s ease,
        border-color 0.2s ease,
        box-shadow 0.2s ease;
}

.glass-input-password {
    padding-right: 52px;
}

.glass-input::placeholder {
    color: var(--text-faint);
}

.glass-input:hover {
    border-color: var(--glass-border-strong);
}

.glass-input:focus {
    outline: none;
    background: rgba(255, 255, 255, 0.09);
    border-color: var(--field-focus-border);
    box-shadow: 0 0 0 4px var(--field-focus-ring);
}

.glass-input:focus ~ .input-icon {
    color: var(--accent-strong);
}

.glass-input.autofill {
    -webkit-text-fill-color: var(--text);
    transition: background-color 9999s ease-in-out 0s;
}

.password-toggle {
    position: absolute;
    right: 7px;
    top: 50%;
    transform: translateY(-50%);
    width: 40px;
    height: 40px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: none;
    border-radius: 10px;
    color: var(--text-faint);
    font-size: 20px;
    cursor: pointer;
    transition: color 0.2s ease, background 0.2s ease;
}

.password-toggle:hover {
    color: var(--text);
    background: rgba(255, 255, 255, 0.06);
}

.password-toggle:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

.field-turnstile {
    display: flex;
    justify-content: center;
}

/* ============================================================
   Button
   ============================================================ */

.btn-wrap {
    width: 100%;
    display: flex;
    justify-content: center;
    margin-top: 4px;
}

.glass-button {
    --btn-h: 52px;
    position: relative;
    width: 100%;
    height: var(--btn-h);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: var(--btn-bg);
    color: var(--btn-text);
    border: 1px solid rgba(255, 255, 255, 0.6);
    border-radius: var(--radius-btn);
    font-family: inherit;
    font-size: 15px;
    font-weight: 600;
    letter-spacing: 0.01em;
    cursor: pointer;
    box-shadow: 0 10px 26px rgba(0, 0, 0, 0.28);
    overflow: hidden;
    transition:
        width 0.45s cubic-bezier(0.22, 1, 0.36, 1),
        border-radius 0.45s cubic-bezier(0.22, 1, 0.36, 1),
        background 0.3s ease,
        border-color 0.3s ease,
        transform 0.15s ease,
        box-shadow 0.3s ease;
}

.glass-button:hover:not(:disabled) {
    background: var(--btn-hover);
    transform: translateY(-1px);
    box-shadow: 0 14px 32px rgba(0, 0, 0, 0.32);
}

.glass-button:active:not(:disabled) {
    transform: translateY(0);
    background: rgba(255, 255, 255, 0.82);
}

.glass-button:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

.glass-button:disabled {
    cursor: not-allowed;
}

/* слои кнопки */
.btn-label,
.btn-spinner,
.btn-success,
.btn-error {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: opacity 0.2s ease;
}

.btn-spinner,
.btn-success,
.btn-error {
    opacity: 0;
    pointer-events: none;
}

/* LOADING */
.glass-button[data-state="loading"] {
    width: var(--btn-h);
    border-radius: 50%;
}

.glass-button:not([data-state="idle"]) .btn-label {
    opacity: 0;
}

.glass-button[data-state="loading"] .btn-spinner {
    opacity: 1;
}

/* SUCCESS */
.glass-button[data-state="success"] {
    width: var(--btn-h);
    border-radius: 50%;
    background: #22c55e;
    border-color: #22c55e;
}

.glass-button[data-state="success"] .btn-success {
    opacity: 1;
}

/* ERROR */
.glass-button[data-state="error"] {
    width: var(--btn-h);
    border-radius: 50%;
    background: #ef4444;
    border-color: #ef4444;
    animation: btn-shake 0.4s ease;
}

.glass-button[data-state="error"] .btn-error {
    opacity: 1;
}

/* spinner */
.btn-spinner svg {
    width: 24px;
    height: 24px;
    color: var(--btn-text);
    animation: spin 0.9s linear infinite;
}

/* checkmark */
.btn-success svg {
    width: 22px;
    height: 22px;
}

.btn-success svg path {
    stroke-dasharray: 1;
    stroke-dashoffset: 1;
    animation: draw-check 0.35s ease forwards 0.1s;
}

/* cross */
.btn-error svg {
    width: 22px;
    height: 22px;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

@keyframes draw-check {
    to { stroke-dashoffset: 0; }
}

@keyframes btn-shake {
    0%, 100% { transform: translateX(0); }
    20% { transform: translateX(-5px); }
    40% { transform: translateX(5px); }
    60% { transform: translateX(-3px); }
    80% { transform: translateX(3px); }
}

/* ============================================================
   Footer links
   ============================================================ */

.form-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin-top: 20px;
    font-size: 13.5px;
}

.form-footer-hint {
    color: var(--text-dim);
}

.form-footer-hint a {
    color: var(--accent-strong);
    font-weight: 600;
    text-decoration: none;
    transition: color 0.2s ease;
}

.form-footer-hint a:hover {
    color: var(--text);
    text-decoration: underline;
}

.form-footer-hint a:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
    border-radius: 4px;
}

.form-footer-link {
    color: var(--text-dim);
    text-decoration: none;
    padding: 6px 8px;
    border-radius: 8px;
    transition: color 0.2s ease;
    white-space: nowrap;
}

.form-footer-link:hover {
    color: var(--text);
    text-decoration: underline;
}

.form-footer-link:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

/* ============================================================
   Alert
   ============================================================ */

.alert {
    padding: 12px 14px;
    border-radius: 12px;
    margin-bottom: 18px;
    font-size: 13.5px;
    border: 1px solid transparent;
}

.alert-error {
    background: var(--err-bg);
    border-color: var(--err-border);
    color: var(--err);
}

.alert-success {
    background: rgba(76, 212, 139, 0.12);
    border-color: rgba(76, 212, 139, 0.35);
    color: #6fe3a5;
}

.hidden {
    display: none !important;
}

/* ============================================================
   Fallback: нет backdrop-filter
   ============================================================ */

@supports not ((backdrop-filter: blur(1px)) or (-webkit-backdrop-filter: blur(1px))) {
    .glass-panel {
        background: rgba(22, 25, 34, 0.94);
    }
    .glass-input {
        background: rgba(255, 255, 255, 0.04);
    }
    .glass-badge {
        background: rgba(255, 255, 255, 0.04);
    }
}

/* ============================================================
   Responsive
   ============================================================ */

@media (max-width: 480px) {
    .glass-panel {
        width: min(100% - 24px, 440px);
        padding: 22px 18px;
        border-radius: 22px;
        backdrop-filter: blur(6px) saturate(125%);
        -webkit-backdrop-filter: blur(6px) saturate(125%);
    }
    .glass-back {
        margin-bottom: 14px;
    }
    .glass-header {
        margin-bottom: 18px;
    }
    .glass-badge {
        margin-bottom: 12px;
    }
    .glass-subtitle {
        margin-top: 5px;
    }
    .glass-form {
        gap: 12px;
    }
    .field-help {
        margin-top: 5px;
    }
    .glass-input {
        height: 48px;
    }
    .glass-button {
        --btn-h: 50px;
    }
    .form-footer {
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
        margin-top: 16px;
    }
    .form-footer-link {
        padding: 8px 8px;
    }
}

@media (max-width: 360px) {
    .glass-title {
        font-size: 1.45rem;
    }
    .glass-input {
        height: 48px;
    }
    .glass-button {
        --btn-h: 50px;
    }
}

/* ============================================================
   Reduced motion
   ============================================================ */

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.001ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.001ms !important;
    }
    .blob {
        animation: none !important;
    }
    .fireflies {
        display: none;
    }
}